Improvement in machines for jointing shingles



front elevation.

UNITED STATES PATENT OFFICE.

JOHN FREDERICK PARKES, OF DETROIT, MICHIGAN.

Specification forming part of Letters Patent No. 40,274, dated October 13, 1863.

To all whom t may concern.-

Be it known that I, JOHN FREDERICK PARKES, of Birmingham, England, and 110W residing in the city of Detroit, iu the county of Wayne, State of Michigan, have invented anew and useful Machine for J ointing Shingles and Barrel-Headings; and I do hereby declare that the `folloWin g is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure lis a perspective view. Fig. 2 is a Fig. 3 is an end view of the machine, in Which- The part marked A is a circular saw. B B is a hinged table. C is a weight. D" is a pulley. E is a 'guard piece. F is a stoppicce. G" is a shaft; H, a pin or bolt.

To enable others skilled in the art to make and use myinvention, I will proceed to describe its construction and operation.

I construct a frame for the machine in the usual manner. I provide a shaft, G", on which is fixed the saw Al and the pulley D. I provide a table, B B, which works on the upper part of the frame of the machine on the pin or bolt H. On the said table B B is a guard and gage piece, E", and also the stoppiece F and the weight C.

The operation ofthe machine is as follows: A belt runs on the pulley D from the power used, causing the shaft G" to revolve, and with it the saw A. B B, with the butt of the shingle to the stoppiece F, and pushing the edge of the shingle under the guard or gage piece E, until I can see a good edge of the shingle outside of the guard-piece E, then press down the table B B, bringing the shingle down on the saw, thereby cutting off the rough edge of the shingle and making it square with the butt. The shingle is turned over, and the same time the Weight C raises the table B B" again. The operation is repeated, and the shingle is finished.

I claiml. The combination of the hinged or falling table B B with the circular saw A, as described.

2. Bringing the middle of the shingle or barrel-heading, or nearly so, first to the saw.

3. The use of the guard or gage piece E.

4. The whole machine, constructed substantially as and for the purposes set forth.

.IC EIN FREDERICK PARKES.

Vtnesses:

A. WANLEss, J osEPH PARKEs.

I put a shingle on the table 

